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Finding the Fourth Proportional to 489,929.60, 734,116.80 and 323,523.20

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Solution

The fourth proportional to 489,929.60, 734,116.80 and 323,523.20 is: 484,771.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,929.60 : 734,116.80 = 323,523.20 : x
  2. Step 2: Convert to fraction form
    489,929.60/734,116.80 = 323,523.20/x
  3. Step 3: Cross multiply
    489,929.60x = 734,116.80 × 323,523.20
  4. Step 4: Simplify right side
    489,929.60x = 237,503,816,309.76
  5. Step 5: Solve for x
    x = 237,503,816,309.76/489,929.60
  6. Step 6: Final answer
    x = 484,771.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.